things to look for

weight - can you lift it
whether you want off road capabilities or not
size of pram relative to boot of car
jogging ability or not
narrow aisle ability or not
ability to take two later on - or not
folding - are you comfortable with how to do it
sun shade
price!!!! just because its super expensive doesn't mean it will suit your purpose
sturdy or not
do you want to be able to see bubs (reversible/peekaboo hole

now you probably won't get everything you want but these are just some things I consider